Sprinkler head



7, 1937. c. w. CARLSON 2,090,284

SPRINKLER HEAD Filed May 18, 1936 mm N INVENTOR.

Z6 g arexrqe WC'ar/s 0/7 ATTORNEY.

Patented Aug. 17, 1937 UNITED sures:

PATENT OFFICE Application May 18,

4 Claims.

This invention relatesto a rotary sprinkler of the type which isconstructed to water predetermined specific shapes of lawn, shrub orother vegetation areas.

It is anobject of the invention greatly to simplify the means forautomatically varying the distance that the spray is thrown from therotating sprinkler head at difierent positions there of duringeachrotation.

10 Another object of the invention is to provide, in combination withother improved features, a very compact sprinkler head which can bemanufactured at a lower cost than the majority of other devices of thesame type.

15 Still another object of the invention is to furnish for the sprinklera set of simplified spray control members which can be manufacture-dindifferent patterns at a lowered cost, each of these spray controlmembers being readily insertible and removable, and when insertedserving to control as desired the shape of the sprinkled area.

Other objects relate to dependable operation and lessened liability ofgetting outof order, and ease of installing.

Owing to the low price at which the sprinkler can be sold it is welladapted for installing: as a part of permanent lawn sprinkling systemswhich require a large number of sprinkling heads to furnish water toextensive areas.

Other objects, advantages andifeatures of the invention willhereinafterappear.

Referring to the accompanying drawing, which illustrates what is atpresent deemed to be a preferred embodiment of theinvention,

5;; Fig. 1 is a vertical mid-section of the complete device, thesprinkling caporhead being shown in the extended, operative position.

Fig. 2 is a top plan View of the device. Fig. 3 is a side elevation ofthe upper portion 40 of the sprinkler head or cap looking at the samefrom right to left of the showing in Fig. 2.

Fig. 4 is a transverse section of the regulating sleeve taken on line 44of Fig. 5.

Fig. 5 is a plan view of Fig. 4.

Fig. 6 is an outline showing, by way of example, the shape of a plotwhich can be uniformly sprinkled by the device.

Referring in detail to the drawing, the upstanding water delivery pipe Ihas rotatably and 50 slidably mounted upon its discharge end portion anelongated cylindrical head or cap 8 having a cylindrical body portionand furnished with a l main discharge nozzle or extension 9 and with anauxiliary discharge ill, the latter being shown 55 as a tube which istangentially deflected to cause 1936,- Serial No. 80,316

the reactive force of the stream passing through it to rotate thesprinkler head 8. The'main nozzlefi'is shown as a laterally compressedor flattenedtube which extends radially and up-' wardlyin relation tothe cap-body 8 there being a water delivery port H leading from said capinto the lower part 'of the nozzle 9: Said nozzle 9 'has a dischargeopening l2 between its convex lips l3,-"-said' -opening being a rathernarrow slit whichdiminish'esin width towards its lower end. ,Theextremity of said nozzle 9, as viewed in Fig. 2, is deflected somewhatin an anticlockwise direction in order to give this nozzle the abilityto rotate the-sprinkler head by the reaction of the water issuingtherefrom as it performs its sprinkling function;

The closed end portion of the cap 8 may be intgral therewitti or it''may-consist ofa shallow cap. l l' screwed o-n to itr The lowerendof thehead '8 may have screwedon to it an annular-nut l5, thereby providing apacking gland Iiiaround thepipe 1L In order to stabilize the-head 8,as'well as to limit 'its upward sliding movement'an axial guide andstoprodll'issecured therewithin by'means of the nuts l8 and l9, said rodhaving at its lower end ahead 2il whic'h engages a part 2! to limittheoutward movementofthe head under hydraulic 'pressu're hubof abridgeor internal cross bar or spider 22 located near the mouth of the pipe'I' and in a fixed relation thereto.

In order to vary the amount of water passing through the port I hatdiff'erent rotational positionsipfithehead 8iaicontrol sleeve 23 isprovided which is secured to the upper 'end portion of the pipei'l. and"which *has Y extensions 24 with intervening recesses or cut-awayportions 25, said recesses and extensions coming alternately intoalinement with, and affecting the size of the port H as the head 8rotates.

To sprinkle, for example a square area, the head and sleeve will be soarranged that a recess 25 will come opposite to the port whenever thenozzle extension 9 is directed towards a corner of the area beingsprinkled, because at such a time a greater and more forcible deliveryof Said partZl is shown as a Desirably the pipe will at least have sions26 to cooperate with them. This con struction permits the sleeve to befitted laterally into place on the end of the pipe before the head 8 isput in place.

The sleeve 23, when in place upon the discharge end ofthe water supplypipe, constitutes a cylindrical extension of said pipewhich occupies aspace that is circumscribed within the external diameter of the adjacentend portion of said pipe. This construction affords a smooth bearingsurface for the cylindrical portion of the head to rotate about.

A plurality of .the controlling sleeves 23 may be provided all of whichare shaped the same port of the cap in different rotational positionsexcept as to their extensions 24, thereby providing means to control thedischarge in such a manner as to water not only'square plots, but also,for example, the trapezoidalaarea 30 shown in Fig. 6. This dischargecontrol, being free from gears, cranks, etc., operates in a moreuniform, dependable manner andispractically free from friction.

The installment and operation of the, device will be readily understoodfrom thezforegoing description, but it may be ,well to point out thatwhen the water supply isshut off the sprinkler head 8. will eithergravitate or else may be easily pushed down toa retracted positionwherein it will be out of the Way of lawn moweraetc.

To remove the rod l1, first unscrew .the upper. cap l4 withoutdisturbing nut I8, then while the head 8 is in a retracted position thecap l4 may be sufficiently separated therefrom to permit pliers or theoperatorsfingers tograsp said rod to prevent it from dropping outofreach.

What is claimed is; V U 1. In a device of the .kind described, a watersupply pipe, an elongated cylindrical cap the open end portion of whichis fittedv externally "slidable and a rotatable; manner, an axial guide.

around the delivery end of said pipe inflboth a rod within said capsecured to the closed end portion thereof, and a bridge across, saidpipe, said bridge having a central bore through. which said guide rodslidably and turnably extends, said cap having an outlet port to deliverwater for sprinkling, means attached tothe, end portion of said pipewithin said cap towvary the quantity of dischargethrough-said port indifferent' rotational positions of said cap when, said cap is positionedin'its extendedpositiomand supply pipe, an elongated cylindrical cap theopen end portion of which is fitted externally around the delivery endof said pipe in both a slidable and a rotatable manner, an axial guiderod within said cap secured to the closed end portion thereof, a bridgeacross said pipe, said bridge having a central bore through which saidguide rod slidably and turnably extends, said cap having an outlet portto deliver water for sprinkling and to impart a rotational movementthereto, and a non-rotatable cylindrical member within said cap andsecured to the end portion of said pipe, said member being shaped tovary the quantity of discharge through said outlet of said cap when saidcap is positioned in its extended position, there being a dischargemeans extendingupwardly and outwardly from said outlet port.

3. In a device of the kind described, a water supply pipe, an,elongatedcylindrical cap the open end portion of which is fittedexternally around the delivery end of said pipe in both a. slidable anda rotatable manner, an axial guide rod within said cap secured to theclosed end portion thereof, a bridge across said pipe, said bridgehaving a central, bore through which said guide rod slidably andturnably extends, said cap having an outlet port to deliverwater for,sprinkling, said port being opened by the movement of said cap to itsextended position, means attached to the end portion of said pipe withinsaid cap to vary the quantity of discharge through said port indifferent rotational positions of said cap,said cap being provided withcommunicating with said port and extending upwardly a substantialdistance above the means to vary the quantity of the discharge. 7

4. In a device of the kind described, the combination with a watersupply piperof a cylindrical extension provided with means fordetachable connection with the discharge end of said pipe, saidextension having spray controlling portions and being confined to thearea circumscribed by the'external circumference of said pipe, and acylindrical sprinkler head slidable over abutting end portions of saidextension and pipe to and from a sprinkling position, said head beingrotatable and being provided with a means to produce rotation, therebeing CLARENCE W. CARLSON.

' means to cause its rotation, and discharge means

